Pugh, G. T. (1955). Guide to research writing. Houghton Mifflin Company.
Cita Chicago Style (17a ed.)Pugh, Griffith Thompson. Guide to Research Writing. Boston: Houghton Mifflin Company, 1955.
Cita MLA (9a ed.)Pugh, Griffith Thompson. Guide to Research Writing. Houghton Mifflin Company, 1955.
Precaución: Estas citas no son 100% exactas.